<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script>
        function init() {
            window.addEventListener("hashchange", () => {
                let url = location.hash.replace("#", "");
                let insertPoint = document.getElementById("insertPoint");
                switch (url) {
                    case "emp":
                        insertPoint.innerHTML = "普通员工界面";
                        break;
                    case "manager":
                        insertPoint.innerHTML = "管理员工界面";
                        break;
                }
            }, false);
        }
        window.addEventListener("load", init, false);
    </script>
</head>

<body>
    <ul style="list-style:none">
        <li style="float:left;width:200px;text-align:center">
            <a href="#emp">员工</a>
        </li>
        <li style="float:left;width:200px;text-align:center">
            <a href="#manager">管理员</a>
        </li>
    </ul>
    <br>
    <hr>
    <div id="insertPoint"></div>
</body>

</html>